g0701_0800.s0740_delete_and_earn

Class Solution

java.lang.Object

g0701_0800.s0740_delete_and_earn.Solution

public class Solution
extends Object

740 - Delete and Earn.

Medium

You are given an integer array nums. You want to maximize the number of points you get by performing the following operation any number of times:

• Pick any nums[i] and delete it to earn nums[i] points. Afterwards, you must delete every element equal to nums[i] - 1 and every element equal to nums[i] + 1.

Return the maximum number of points you can earn by applying the above operation some number of times.

Example 1:

Input: nums = [3,4,2]

Output: 6

Explanation: You can perform the following operations:

• Delete 4 to earn 4 points. Consequently, 3 is also deleted. nums = [2].

• Delete 2 to earn 2 points. nums = [].

You earn a total of 6 points.

Example 2:

Input: nums = [2,2,3,3,3,4]

Output: 9

Explanation: You can perform the following operations:

• Delete a 3 to earn 3 points. All 2’s and 4’s are also deleted. nums = [3,3].

• Delete a 3 again to earn 3 points. nums = [3].

• Delete a 3 once more to earn 3 points. nums = [].

You earn a total of 9 points.

Constraints:

• 1 <= nums.length <= 2 * 104
• 1 <= nums[i] <= 104

Constructor Summary

Constructors

Constructor and Description
Solution()

Method Summary

Modifier and Type	Method and Description
int	deleteAndEarn(int[] nums)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Solution

public Solution()

Method Detail

deleteAndEarn

public int deleteAndEarn(int[] nums)